Igcse Model Questions Vol1 2017 Chemistry Question 32
Practice objective / multiple choice question 32 from the 2017 Igcse Model Questions Vol1 Chemistry examination.
A solution containing 0.0100 mol of \(\mathrm{Cu^{2+}}\) and 0.0150 mol of \(\mathrm{Zn^{2+}}\) is electrolysed using a copper cathode and a zinc anode. A constant current of 2.00 A is passed for 30.0 min. The current efficiency for copper deposition is 90 % and for zinc dissolution is 80 %. Calculate (a) the mass of copper deposited on the cathode, (b) the mass of zinc that dissolves from the anode, and (c) which metal‑ion concentration decreases by the larger percentage.
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This is Igcse Model Questions Vol1 2017 Chemistry Question 32. It is one of the objective questions from the 2017 Igcse Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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